Uploaded March 2022 | Updated September 2026, 1 week ago

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UMAP is one of the most popular dimension-reductions algorithms and this StatQuest walks you through UMAP, one step at a time, so that you will have a solid understanding of how UMAP works.

NOTE: This StatQuest is based on the original UMAP manuscript...
arxiv.org/pdf/1802.03426.pdf
...specifically Appendix C, From t-SNE to UMAP, which is also here...
jlmelville.github.io/uwot/umap-for-tsne.html
...and the UMAP user documentation...
umap-learn.readthedocs.io/en/latest/parameters.html

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0:00 Awesome song and introduction
1:07 Motivation for UMAP
2:55 UMAP main ideas
5:22 Calculating high-dimensional similarity scores
10:41 Getting started with the low-dimensional graph
12:37 Calculating low-dimensional similarity scores and moving points
15:49 UMAP vs t-SNE

#StatQuest #UMAP #DimensionReduction